15715117020 has 48 divisors (see below), whose sum is σ = 44007828480. Its totient is φ = 4190174016.

The previous prime is 15715117003. The next prime is 15715117063. The reversal of 15715117020 is 2071151751.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 824761 + ... + 843599.

It is an arithmetic number, because the mean of its divisors is an integer number (916829760).

Almost surely, 2^15715117020 is an apocalyptic number.

15715117020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15715117020 is an abundant number, since it is smaller than the sum of its proper divisors (28292711460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15715117020 is a wasteful number, since it uses less digits than its factorization.

15715117020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32754 (or 32752 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 30.

Adding to 15715117020 its reverse (2071151751), we get a palindrome (17786268771).

The spelling of 15715117020 in words is "fifteen billion, seven hundred fifteen million, one hundred seventeen thousand, twenty".